I'd make a slight amendment to this: slow-cooked food is brilliant because you don't have to keep an eye on it, except occasionally. So you could put on a stew or a casserole or a pie sort of device and wander off to do chores for a few hours. Same with baking bread, if you can afford your own fireplace (or oven!). Rotisserie requires a lot of attention, but anything enclosed can be sat on or near or buried under a fire and let go.